I love me some ahistorical bullshit
The “full” acronym at one point was “GL”, after lesbians fought against male homosexuality being the “face” of the movement (i.e., the Alliance for Gay Artists (AGA), founded in 1982, was renamed the Alliance for Gay and Lesbian Artists shortly thereafter; and the Gay Activists Alliance never included “Lesbian” in their title).
The “full” acronym at another point was “LGB”, only after bisexual activists campaigned fiercely to be included, and is often still not even included in acronyms
The “full” acronym at yet another point was “LGBT”, only after trans activists campaigned fiercely to be included
Queer was added to the acronym after it was reclaimed and re-politicized by ACT UP off-shoot Queer Nation in the early 1990s. LGBTQ has been a thing since the 90s.
ONE Archives, which is the largest repository of LGBTQIA+ materials in the world and was founded by some of the principle members of the early (1950s-60s) homophile movement, which led to the gay rights movement post-Stonewall, uses the full acronym LGBTQ on their website and also freely uses the word “Queer” interchangeably.
As of 2014, NOW (National Organization for Women) agreed to switch to use of the full LGBTQIA acronym, and it likely isn’t the only large social rights organization to have done so
Many LGBTQ+ magazines use LGBTQ, including One (which has existed in some form since the 1950s) and The Advocate, use LGBTQ or LGBTQIA as the full acronym and regularly use “queer” as a phrase (and, in fact, some articles have welcomed asexual people and their narratives as part of the queer experience).
The acronym is constantly evolving. It’s not static. To claim otherwise is blatant ignorance. The modern-day LGBTQ+ community is a result of decades of political activism, social inclusion, and community outreach. It’s not a rigid structure that operates by a strict set of rules about who can and cannot join.